Actress Olivia Wilde arrives at the world premiere of Rush at a cinema in Leicester Square, central London.(Sept. 2, 2013) (Photo : Reuters)

Jason Sudeikis and actress Olivia Wilde arrive for the premiere of the film "We're the Millers" in New York. (Aug. 1, 2013) (Photo : Reuters)

Actress Olivia Wilde will soon be proudly showing off her bun in the oven, E! News confirmed.

Wilde is pregnant, according to a source close to the couple as people on the web await to see the first pictures of her baby bump.

The House M.D. actress, 28, and her fiancé, Saturday Night Live cast member Jason Sudeikis, 37, met on the SNL season finale in 2011 and announced their engagement in January.

An insider said of their wedding plans, "They are so excited...And very, very happy."

She then tweeted out the news on January 13 to share her excitement and wrote, "Thanks for all the sweet congratulatory love, friends! And may I compliment your savvy use of that nifty engagement ring emoticon."

This will be the second marriage for both actors. Wilde was 19-years-old when she tied the knot with Tao Ruspoli. The two divorced after eight years. Sudeikis split from his wife, 30 Rock Producer Kay Cannon in 2008 after being married four years.

As far as a wedding date, the actress told David Letterman, "We don't know...We're having fun. He's the greatest."

While she hasn't spoken out about the pregnancy yet, in an interview with Marie Claire in its March 2013 issue, Wilde not only opened up about having children one day.

"We've discussed all our ideals and hopes. I can't wait for children. I'm open-minded about how many, but three, which I love, is like a little party. I am not trying to have kids now -- there's no strict plan for anything in my life. What happens, happens."

She went on to gush about why Sudeikis would be a great father.

He's so good with kids...I've never before experienced looking at someone andt hinking, 'That's who I want to raise a child with.'"